美国和欧洲的主权债务问题令人不安。
葡萄牙可能需要援助使得欧洲主权债务问题再次浮出水面；
The European sovereign debt issue has risen again with Portugal likely needing aid;
汇丰分析师写道，另外欧洲还出现了主权债务问题，在人们担心其将蔓延之际，欧洲主权债务危机在5月加剧。
'in addition, we have the European sovereign debt concern, which intensified in May amid concerns of contagion,' note the HSBC analysts.
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